California earthquakes

M2.1 earthquake 10 km NNE of Coalinga, California

A magnitude 2.1 earthquake struck 10 km NNE of Coalinga, California on Thu, May 23, 1985, 9:17 PM PDT (04:17 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.3 7km NW of Parkfield, CA. This one was a foreshock.

Coalinga forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (md), micro
Local time
UTC
1985-05-24 04:17:16 UTC
Depth
9.4 km (5.8 mi), shallow
Epicenter
36.228° N, 120.329° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.25
Depth from
From location
Station coverage gap
100°
Stations used
21

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 70 in the 30 days before it.

After

The first 60 of 125.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc48369 (also filed as ci67050). Read Tue, Sep 22, 2026, 10:27 PM UTC.